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  1. P

    Detecting solenoid ON and OFF state

    Yes, I'm using all CMOS IC's. OK I'm beware of giving time delay using trial and error method to find find out time delay. In-between the solenoid and PIC18F87K22 there will be 3 meters distance. To control I use D-f/f connected to solenoid via transistor buffer or IC buffer. Still confuse to...
  2. P

    Detecting solenoid ON and OFF state

    Hi, Can we use open-drain NAND gate? If not means why?
  3. P

    Detecting solenoid ON and OFF state

    Very very thank you. For this I lost so many days and thought lot of complexity technique including multiplexing, flip-flop so and so. And this one is very very simple one you gave. I learned new one "Open-collector NAND". Genius ahead of all. Again and again very very thanks.
  4. P

    Detecting solenoid ON and OFF state

    Hi, Thanks for your questions. You just simplified my all doubts. I have to improve my question asking skills because I'm new to online forum. Yes, I want to determine when any of the 128 solenoids fails to actuate. Yes, there is a logic signal available, when a solenoid is supposed to be...
  5. P

    Detecting solenoid ON and OFF state

    I want to detect solenoid ON and OFF state. If solenoid ON, with respect to HIGH signal no problem. If solenoid not working means with respect to HIGH signal, solenoid remains OFF state. In that situation I have to generate HIGH or LOW signal. So I designed a circuit with XOX gate attached here...
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